A little embarrassing, but I have a small red mark on my butt from a pimple I had almost a year ago. It just wont fade! It looks as if there is still a pimple, but if you feel it there is no raised bump whatsoever. I have been using 2.5% benzoyl peroxide and hydrocuartozone. Will anything else help? Has any one had this problem? Im SUPER self conscious about it and pretty desperate!